/*!
 * vue-resource v1.5.3
 * https://github.com/pagekit/vue-resource
 * Released under the MIT License.
 */

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
        typeof define === 'function' && define.amd ? define(factory) :
            (global.VueResource = factory());
}(this, (function () { 'use strict';

    /**
     * Promises/A+ polyfill v1.1.4 (https://github.com/bramstein/promis)
     */
    var RESOLVED = 0;
    var REJECTED = 1;
    var PENDING = 2;
    function Promise$1(executor) {
        this.state = PENDING;
        this.value = undefined;
        this.deferred = [];
        var promise = this;

        try {
            executor(function (x) {
                promise.resolve(x);
            }, function (r) {
                promise.reject(r);
            });
        } catch (e) {
            promise.reject(e);
        }
    }

    Promise$1.reject = function (r) {
        return new Promise$1(function (resolve, reject) {
            reject(r);
        });
    };

    Promise$1.resolve = function (x) {
        return new Promise$1(function (resolve, reject) {
            resolve(x);
        });
    };

    Promise$1.all = function all(iterable) {
        return new Promise$1(function (resolve, reject) {
            var count = 0,
                result = [];

            if (iterable.length === 0) {
                resolve(result);
            }

            function resolver(i) {
                return function (x) {
                    result[i] = x;
                    count += 1;

                    if (count === iterable.length) {
                        resolve(result);
                    }
                };
            }

            for (var i = 0; i < iterable.length; i += 1) {
                Promise$1.resolve(iterable[i]).then(resolver(i), reject);
            }
        });
    };

    Promise$1.race = function race(iterable) {
        return new Promise$1(function (resolve, reject) {
            for (var i = 0; i < iterable.length; i += 1) {
                Promise$1.resolve(iterable[i]).then(resolve, reject);
            }
        });
    };

    var p = Promise$1.prototype;

    p.resolve = function resolve(x) {
        var promise = this;

        if (promise.state === PENDING) {
            if (x === promise) {
                throw new TypeError('Promise settled with itself.');
            }

            var called = false;

            try {
                var then = x && x['then'];

                if (x !== null && typeof x === 'object' && typeof then === 'function') {
                    then.call(x, function (x) {
                        if (!called) {
                            promise.resolve(x);
                        }

                        called = true;
                    }, function (r) {
                        if (!called) {
                            promise.reject(r);
                        }

                        called = true;
                    });
                    return;
                }
            } catch (e) {
                if (!called) {
                    promise.reject(e);
                }

                return;
            }

            promise.state = RESOLVED;
            promise.value = x;
            promise.notify();
        }
    };

    p.reject = function reject(reason) {
        var promise = this;

        if (promise.state === PENDING) {
            if (reason === promise) {
                throw new TypeError('Promise settled with itself.');
            }

            promise.state = REJECTED;
            promise.value = reason;
            promise.notify();
        }
    };

    p.notify = function notify() {
        var promise = this;
        nextTick(function () {
            if (promise.state !== PENDING) {
                while (promise.deferred.length) {
                    var deferred = promise.deferred.shift(),
                        onResolved = deferred[0],
                        onRejected = deferred[1],
                        resolve = deferred[2],
                        reject = deferred[3];

                    try {
                        if (promise.state === RESOLVED) {
                            if (typeof onResolved === 'function') {
                                resolve(onResolved.call(undefined, promise.value));
                            } else {
                                resolve(promise.value);
                            }
                        } else if (promise.state === REJECTED) {
                            if (typeof onRejected === 'function') {
                                resolve(onRejected.call(undefined, promise.value));
                            } else {
                                reject(promise.value);
                            }
                        }
                    } catch (e) {
                        reject(e);
                    }
                }
            }
        });
    };

    p.then = function then(onResolved, onRejected) {
        var promise = this;
        return new Promise$1(function (resolve, reject) {
            promise.deferred.push([onResolved, onRejected, resolve, reject]);
            promise.notify();
        });
    };

    p["catch"] = function (onRejected) {
        return this.then(undefined, onRejected);
    };

    /**
     * Promise adapter.
     */

    if (typeof Promise === 'undefined') {
        window.Promise = Promise$1;
    }

    function PromiseObj(executor, context) {
        if (executor instanceof Promise) {
            this.promise = executor;
        } else {
            this.promise = new Promise(executor.bind(context));
        }

        this.context = context;
    }

    PromiseObj.all = function (iterable, context) {
        return new PromiseObj(Promise.all(iterable), context);
    };

    PromiseObj.resolve = function (value, context) {
        return new PromiseObj(Promise.resolve(value), context);
    };

    PromiseObj.reject = function (reason, context) {
        return new PromiseObj(Promise.reject(reason), context);
    };

    PromiseObj.race = function (iterable, context) {
        return new PromiseObj(Promise.race(iterable), context);
    };

    var p$1 = PromiseObj.prototype;

    p$1.bind = function (context) {
        this.context = context;
        return this;
    };

    p$1.then = function (fulfilled, rejected) {
        if (fulfilled && fulfilled.bind && this.context) {
            fulfilled = fulfilled.bind(this.context);
        }

        if (rejected && rejected.bind && this.context) {
            rejected = rejected.bind(this.context);
        }

        return new PromiseObj(this.promise.then(fulfilled, rejected), this.context);
    };

    p$1["catch"] = function (rejected) {
        if (rejected && rejected.bind && this.context) {
            rejected = rejected.bind(this.context);
        }

        return new PromiseObj(this.promise["catch"](rejected), this.context);
    };

    p$1["finally"] = function (callback) {
        return this.then(function (value) {
            callback.call(this);
            return value;
        }, function (reason) {
            callback.call(this);
            return Promise.reject(reason);
        });
    };

    /**
     * Utility functions.
     */
    var _ref = {},
        hasOwnProperty = _ref.hasOwnProperty,
        slice = [].slice,
        debug = false,
        ntick;
    var inBrowser = typeof window !== 'undefined';
    function Util (_ref2) {
        var config = _ref2.config,
            nextTick = _ref2.nextTick;
        ntick = nextTick;
        debug = config.debug || !config.silent;
    }
    function warn(msg) {
        if (typeof console !== 'undefined' && debug) {
            console.warn('[VueResource warn]: ' + msg);
        }
    }
    function error(msg) {
        if (typeof console !== 'undefined') {
            console.error(msg);
        }
    }
    function nextTick(cb, ctx) {
        return ntick(cb, ctx);
    }
    function trim(str) {
        return str ? str.replace(/^\s*|\s*$/g, '') : '';
    }
    function trimEnd(str, chars) {
        if (str && chars === undefined) {
            return str.replace(/\s+$/, '');
        }

        if (!str || !chars) {
            return str;
        }

        return str.replace(new RegExp("[" + chars + "]+$"), '');
    }
    function toLower(str) {
        return str ? str.toLowerCase() : '';
    }
    function toUpper(str) {
        return str ? str.toUpperCase() : '';
    }
    var isArray = Array.isArray;
    function isString(val) {
        return typeof val === 'string';
    }
    function isFunction(val) {
        return typeof val === 'function';
    }
    function isObject(obj) {
        return obj !== null && typeof obj === 'object';
    }
    function isPlainObject(obj) {
        return isObject(obj) && Object.getPrototypeOf(obj) == Object.prototype;
    }
    function isBlob(obj) {
        return typeof Blob !== 'undefined' && obj instanceof Blob;
    }
    function isFormData(obj) {
        return typeof FormData !== 'undefined' && obj instanceof FormData;
    }
    function when(value, fulfilled, rejected) {
        var promise = PromiseObj.resolve(value);

        if (arguments.length < 2) {
            return promise;
        }

        return promise.then(fulfilled, rejected);
    }
    function options(fn, obj, opts) {
        opts = opts || {};

        if (isFunction(opts)) {
            opts = opts.call(obj);
        }

        return merge(fn.bind({
            $vm: obj,
            $options: opts
        }), fn, {
            $options: opts
        });
    }
    function each(obj, iterator) {
        var i, key;

        if (isArray(obj)) {
            for (i = 0; i < obj.length; i++) {
                iterator.call(obj[i], obj[i], i);
            }
        } else if (isObject(obj)) {
            for (key in obj) {
                if (hasOwnProperty.call(obj, key)) {
                    iterator.call(obj[key], obj[key], key);
                }
            }
        }

        return obj;
    }
    var assign = Object.assign || _assign;
    function merge(target) {
        var args = slice.call(arguments, 1);
        args.forEach(function (source) {
            _merge(target, source, true);
        });
        return target;
    }
    function defaults(target) {
        var args = slice.call(arguments, 1);
        args.forEach(function (source) {
            for (var key in source) {
                if (target[key] === undefined) {
                    target[key] = source[key];
                }
            }
        });
        return target;
    }

    function _assign(target) {
        var args = slice.call(arguments, 1);
        args.forEach(function (source) {
            _merge(target, source);
        });
        return target;
    }

    function _merge(target, source, deep) {
        for (var key in source) {
            if (deep && (isPlainObject(source[key]) || isArray(source[key]))) {
                if (isPlainObject(source[key]) && !isPlainObject(target[key])) {
                    target[key] = {};
                }

                if (isArray(source[key]) && !isArray(target[key])) {
                    target[key] = [];
                }

                _merge(target[key], source[key], deep);
            } else if (source[key] !== undefined) {
                target[key] = source[key];
            }
        }
    }

    /**
     * Root Prefix Transform.
     */
    function root (options$$1, next) {
        var url = next(options$$1);

        if (isString(options$$1.root) && !/^(https?:)?\//.test(url)) {
            url = trimEnd(options$$1.root, '/') + '/' + url;
        }

        return url;
    }

    /**
     * Query Parameter Transform.
     */
    function query (options$$1, next) {
        var urlParams = Object.keys(Url.options.params),
            query = {},
            url = next(options$$1);
        each(options$$1.params, function (value, key) {
            if (urlParams.indexOf(key) === -1) {
                query[key] = value;
            }
        });
        query = Url.params(query);

        if (query) {
            url += (url.indexOf('?') == -1 ? '?' : '&') + query;
        }

        return url;
    }

    /**
     * URL Template v2.0.6 (https://github.com/bramstein/url-template)
     */
    function expand(url, params, variables) {
        var tmpl = parse(url),
            expanded = tmpl.expand(params);

        if (variables) {
            variables.push.apply(variables, tmpl.vars);
        }

        return expanded;
    }
    function parse(template) {
        var operators = ['+', '#', '.', '/', ';', '?', '&'],
            variables = [];
        return {
            vars: variables,
            expand: function expand(context) {
                return template.replace(/\{([^{}]+)\}|([^{}]+)/g, function (_, expression, literal) {
                    if (expression) {
                        var operator = null,
                            values = [];

                        if (operators.indexOf(expression.charAt(0)) !== -1) {
                            operator = expression.charAt(0);
                            expression = expression.substr(1);
                        }

                        expression.split(/,/g).forEach(function (variable) {
                            var tmp = /([^:*]*)(?::(\d+)|(\*))?/.exec(variable);
                            values.push.apply(values, getValues(context, operator, tmp[1], tmp[2] || tmp[3]));
                            variables.push(tmp[1]);
                        });

                        if (operator && operator !== '+') {
                            var separator = ',';

                            if (operator === '?') {
                                separator = '&';
                            } else if (operator !== '#') {
                                separator = operator;
                            }

                            return (values.length !== 0 ? operator : '') + values.join(separator);
                        } else {
                            return values.join(',');
                        }
                    } else {
                        return encodeReserved(literal);
                    }
                });
            }
        };
    }

    function getValues(context, operator, key, modifier) {
        var value = context[key],
            result = [];

        if (isDefined(value) && value !== '') {
            if (typeof value === 'string' || typeof value === 'number' || typeof value === 'boolean') {
                value = value.toString();

                if (modifier && modifier !== '*') {
                    value = value.substring(0, parseInt(modifier, 10));
                }

                result.push(encodeValue(operator, value, isKeyOperator(operator) ? key : null));
            } else {
                if (modifier === '*') {
                    if (Array.isArray(value)) {
                        value.filter(isDefined).forEach(function (value) {
                            result.push(encodeValue(operator, value, isKeyOperator(operator) ? key : null));
                        });
                    } else {
                        Object.keys(value).forEach(function (k) {
                            if (isDefined(value[k])) {
                                result.push(encodeValue(operator, value[k], k));
                            }
                        });
                    }
                } else {
                    var tmp = [];

                    if (Array.isArray(value)) {
                        value.filter(isDefined).forEach(function (value) {
                            tmp.push(encodeValue(operator, value));
                        });
                    } else {
                        Object.keys(value).forEach(function (k) {
                            if (isDefined(value[k])) {
                                tmp.push(encodeURIComponent(k));
                                tmp.push(encodeValue(operator, value[k].toString()));
                            }
                        });
                    }

                    if (isKeyOperator(operator)) {
                        result.push(encodeURIComponent(key) + '=' + tmp.join(','));
                    } else if (tmp.length !== 0) {
                        result.push(tmp.join(','));
                    }
                }
            }
        } else {
            if (operator === ';') {
                result.push(encodeURIComponent(key));
            } else if (value === '' && (operator === '&' || operator === '?')) {
                result.push(encodeURIComponent(key) + '=');
            } else if (value === '') {
                result.push('');
            }
        }

        return result;
    }

    function isDefined(value) {
        return value !== undefined && value !== null;
    }

    function isKeyOperator(operator) {
        return operator === ';' || operator === '&' || operator === '?';
    }

    function encodeValue(operator, value, key) {
        value = operator === '+' || operator === '#' ? encodeReserved(value) : encodeURIComponent(value);

        if (key) {
            return encodeURIComponent(key) + '=' + value;
        } else {
            return value;
        }
    }

    function encodeReserved(str) {
        return str.split(/(%[0-9A-Fa-f]{2})/g).map(function (part) {
            if (!/%[0-9A-Fa-f]/.test(part)) {
                part = encodeURI(part);
            }

            return part;
        }).join('');
    }

    /**
     * URL Template (RFC 6570) Transform.
     */
    function template (options) {
        var variables = [],
            url = expand(options.url, options.params, variables);
        variables.forEach(function (key) {
            delete options.params[key];
        });
        return url;
    }

    /**
     * Service for URL templating.
     */
    function Url(url, params) {
        var self = this || {},
            options$$1 = url,
            transform;

        if (isString(url)) {
            options$$1 = {
                url: url,
                params: params
            };
        }

        options$$1 = merge({}, Url.options, self.$options, options$$1);
        Url.transforms.forEach(function (handler) {
            if (isString(handler)) {
                handler = Url.transform[handler];
            }

            if (isFunction(handler)) {
                transform = factory(handler, transform, self.$vm);
            }
        });
        return transform(options$$1);
    }
    /**
     * Url options.
     */

    Url.options = {
        url: '',
        root: null,
        params: {}
    };
    /**
     * Url transforms.
     */

    Url.transform = {
        template: template,
        query: query,
        root: root
    };
    Url.transforms = ['template', 'query', 'root'];
    /**
     * Encodes a Url parameter string.
     *
     * @param {Object} obj
     */

    Url.params = function (obj) {
        var params = [],
            escape = encodeURIComponent;

        params.add = function (key, value) {
            if (isFunction(value)) {
                value = value();
            }

            if (value === null) {
                value = '';
            }

            this.push(escape(key) + '=' + escape(value));
        };

        serialize(params, obj);
        return params.join('&').replace(/%20/g, '+');
    };
    /**
     * Parse a URL and return its components.
     *
     * @param {String} url
     */


    Url.parse = function (url) {
        var el = document.createElement('a');

        if (document.documentMode) {
            el.href = url;
            url = el.href;
        }

        el.href = url;
        return {
            href: el.href,
            protocol: el.protocol ? el.protocol.replace(/:$/, '') : '',
            port: el.port,
            host: el.host,
            hostname: el.hostname,
            pathname: el.pathname.charAt(0) === '/' ? el.pathname : '/' + el.pathname,
            search: el.search ? el.search.replace(/^\?/, '') : '',
            hash: el.hash ? el.hash.replace(/^#/, '') : ''
        };
    };

    function factory(handler, next, vm) {
        return function (options$$1) {
            return handler.call(vm, options$$1, next);
        };
    }

    function serialize(params, obj, scope) {
        var array = isArray(obj),
            plain = isPlainObject(obj),
            hash;
        each(obj, function (value, key) {
            hash = isObject(value) || isArray(value);

            if (scope) {
                key = scope + '[' + (plain || hash ? key : '') + ']';
            }

            if (!scope && array) {
                params.add(value.name, value.value);
            } else if (hash) {
                serialize(params, value, key);
            } else {
                params.add(key, value);
            }
        });
    }

    /**
     * XDomain client (Internet Explorer).
     */
    function xdrClient (request) {
        return new PromiseObj(function (resolve) {
            var xdr = new XDomainRequest(),
                handler = function handler(_ref) {
                    var type = _ref.type;
                    var status = 0;

                    if (type === 'load') {
                        status = 200;
                    } else if (type === 'error') {
                        status = 500;
                    }

                    resolve(request.respondWith(xdr.responseText, {
                        status: status
                    }));
                };

            request.abort = function () {
                return xdr.abort();
            };

            xdr.open(request.method, request.getUrl());

            if (request.timeout) {
                xdr.timeout = request.timeout;
            }

            xdr.onload = handler;
            xdr.onabort = handler;
            xdr.onerror = handler;
            xdr.ontimeout = handler;

            xdr.onprogress = function () {};

            xdr.send(request.getBody());
        });
    }

    /**
     * CORS Interceptor.
     */
    var SUPPORTS_CORS = inBrowser && 'withCredentials' in new XMLHttpRequest();
    function cors (request) {
        if (inBrowser) {
            var orgUrl = Url.parse(location.href);
            var reqUrl = Url.parse(request.getUrl());

            if (reqUrl.protocol !== orgUrl.protocol || reqUrl.host !== orgUrl.host) {
                request.crossOrigin = true;
                request.emulateHTTP = false;

                if (!SUPPORTS_CORS) {
                    request.client = xdrClient;
                }
            }
        }
    }

    /**
     * Form data Interceptor.
     */
    function form (request) {
        if (isFormData(request.body)) {
            request.headers["delete"]('Content-Type');
        } else if (isObject(request.body) && request.emulateJSON) {
            request.body = Url.params(request.body);
            request.headers.set('Content-Type', 'application/x-www-form-urlencoded');
        }
    }

    /**
     * JSON Interceptor.
     */
    function json (request) {
        var type = request.headers.get('Content-Type') || '';

        if (isObject(request.body) && type.indexOf('application/json') === 0) {
            request.body = JSON.stringify(request.body);
        }

        return function (response) {
            return response.bodyText ? when(response.text(), function (text) {
                var type = response.headers.get('Content-Type') || '';

                if (type.indexOf('application/json') === 0 || isJson(text)) {
                    try {
                        response.body = JSON.parse(text);
                    } catch (e) {
                        response.body = null;
                    }
                } else {
                    response.body = text;
                }

                return response;
            }) : response;
        };
    }

    function isJson(str) {
        var start = str.match(/^\s*(\[|\{)/);
        var end = {
            '[': /]\s*$/,
            '{': /}\s*$/
        };
        return start && end[start[1]].test(str);
    }

    /**
     * JSONP client (Browser).
     */
    function jsonpClient (request) {
        return new PromiseObj(function (resolve) {
            var name = request.jsonp || 'callback',
                callback = request.jsonpCallback || '_jsonp' + Math.random().toString(36).substr(2),
                body = null,
                handler,
                script;

            handler = function handler(_ref) {
                var type = _ref.type;
                var status = 0;

                if (type === 'load' && body !== null) {
                    status = 200;
                } else if (type === 'error') {
                    status = 500;
                }

                if (status && window[callback]) {
                    delete window[callback];
                    document.body.removeChild(script);
                }

                resolve(request.respondWith(body, {
                    status: status
                }));
            };

            window[callback] = function (result) {
                body = JSON.stringify(result);
            };

            request.abort = function () {
                handler({
                    type: 'abort'
                });
            };

            request.params[name] = callback;

            if (request.timeout) {
                setTimeout(request.abort, request.timeout);
            }

            script = document.createElement('script');
            script.src = request.getUrl();
            script.type = 'text/javascript';
            script.async = true;
            script.onload = handler;
            script.onerror = handler;
            document.body.appendChild(script);
        });
    }

    /**
     * JSONP Interceptor.
     */
    function jsonp (request) {
        if (request.method == 'JSONP') {
            request.client = jsonpClient;
        }
    }

    /**
     * Before Interceptor.
     */
    function before (request) {
        if (isFunction(request.before)) {
            request.before.call(this, request);
        }
    }

    /**
     * HTTP method override Interceptor.
     */
    function method (request) {
        if (request.emulateHTTP && /^(PUT|PATCH|DELETE)$/i.test(request.method)) {
            request.headers.set('X-HTTP-Method-Override', request.method);
            request.method = 'POST';
        }
    }

    /**
     * Header Interceptor.
     */
    function header (request) {
        var headers = assign({}, Http.headers.common, !request.crossOrigin ? Http.headers.custom : {}, Http.headers[toLower(request.method)]);
        each(headers, function (value, name) {
            if (!request.headers.has(name)) {
                request.headers.set(name, value);
            }
        });
    }

    /**
     * XMLHttp client (Browser).
     */
    function xhrClient (request) {
        return new PromiseObj(function (resolve) {
            var xhr = new XMLHttpRequest(),
                handler = function handler(event) {
                    var response = request.respondWith('response' in xhr ? xhr.response : xhr.responseText, {
                        status: xhr.status === 1223 ? 204 : xhr.status,
                        // IE9 status bug
                        statusText: xhr.status === 1223 ? 'No Content' : trim(xhr.statusText)
                    });
                    each(trim(xhr.getAllResponseHeaders()).split('\n'), function (row) {
                        response.headers.append(row.slice(0, row.indexOf(':')), row.slice(row.indexOf(':') + 1));
                    });
                    resolve(response);
                };

            request.abort = function () {
                return xhr.abort();
            };

            xhr.open(request.method, request.getUrl(), true);

            if (request.timeout) {
                xhr.timeout = request.timeout;
            }

            if (request.responseType && 'responseType' in xhr) {
                xhr.responseType = request.responseType;
            }

            if (request.withCredentials || request.credentials) {
                xhr.withCredentials = true;
            }

            if (!request.crossOrigin) {
                request.headers.set('X-Requested-With', 'XMLHttpRequest');
            } // deprecated use downloadProgress


            if (isFunction(request.progress) && request.method === 'GET') {
                xhr.addEventListener('progress', request.progress);
            }

            if (isFunction(request.downloadProgress)) {
                xhr.addEventListener('progress', request.downloadProgress);
            } // deprecated use uploadProgress


            if (isFunction(request.progress) && /^(POST|PUT)$/i.test(request.method)) {
                xhr.upload.addEventListener('progress', request.progress);
            }

            if (isFunction(request.uploadProgress) && xhr.upload) {
                xhr.upload.addEventListener('progress', request.uploadProgress);
            }

            request.headers.forEach(function (value, name) {
                xhr.setRequestHeader(name, value);
            });
            xhr.onload = handler;
            xhr.onabort = handler;
            xhr.onerror = handler;
            xhr.ontimeout = handler;
            xhr.send(request.getBody());
        });
    }

    /**
     * Http client (Node).
     */
    function nodeClient (request) {
        var client = require('got');

        return new PromiseObj(function (resolve) {
            var url = request.getUrl();
            var body = request.getBody();
            var method = request.method;
            var headers = {},
                handler;
            request.headers.forEach(function (value, name) {
                headers[name] = value;
            });
            client(url, {
                body: body,
                method: method,
                headers: headers
            }).then(handler = function handler(resp) {
                var response = request.respondWith(resp.body, {
                    status: resp.statusCode,
                    statusText: trim(resp.statusMessage)
                });
                each(resp.headers, function (value, name) {
                    response.headers.set(name, value);
                });
                resolve(response);
            }, function (error$$1) {
                return handler(error$$1.response);
            });
        });
    }

    /**
     * Base client.
     */
    function Client (context) {
        var reqHandlers = [sendRequest],
            resHandlers = [];

        if (!isObject(context)) {
            context = null;
        }

        function Client(request) {
            while (reqHandlers.length) {
                var handler = reqHandlers.pop();

                if (isFunction(handler)) {
                    var _ret = function () {
                        var response = void 0,
                            next = void 0;
                        response = handler.call(context, request, function (val) {
                            return next = val;
                        }) || next;

                        if (isObject(response)) {
                            return {
                                v: new PromiseObj(function (resolve, reject) {
                                    resHandlers.forEach(function (handler) {
                                        response = when(response, function (response) {
                                            return handler.call(context, response) || response;
                                        }, reject);
                                    });
                                    when(response, resolve, reject);
                                }, context)
                            };
                        }

                        if (isFunction(response)) {
                            resHandlers.unshift(response);
                        }
                    }();

                    if (typeof _ret === "object") return _ret.v;
                } else {
                    warn("Invalid interceptor of type " + typeof handler + ", must be a function");
                }
            }
        }

        Client.use = function (handler) {
            reqHandlers.push(handler);
        };

        return Client;
    }

    function sendRequest(request) {
        var client = request.client || (inBrowser ? xhrClient : nodeClient);
        return client(request);
    }

    /**
     * HTTP Headers.
     */

    var Headers = /*#__PURE__*/function () {
        function Headers(headers) {
            var _this = this;

            this.map = {};
            each(headers, function (value, name) {
                return _this.append(name, value);
            });
        }

        var _proto = Headers.prototype;

        _proto.has = function has(name) {
            return getName(this.map, name) !== null;
        };

        _proto.get = function get(name) {
            var list = this.map[getName(this.map, name)];
            return list ? list.join() : null;
        };

        _proto.getAll = function getAll(name) {
            return this.map[getName(this.map, name)] || [];
        };

        _proto.set = function set(name, value) {
            this.map[normalizeName(getName(this.map, name) || name)] = [trim(value)];
        };

        _proto.append = function append(name, value) {
            var list = this.map[getName(this.map, name)];

            if (list) {
                list.push(trim(value));
            } else {
                this.set(name, value);
            }
        };

        _proto["delete"] = function _delete(name) {
            delete this.map[getName(this.map, name)];
        };

        _proto.deleteAll = function deleteAll() {
            this.map = {};
        };

        _proto.forEach = function forEach(callback, thisArg) {
            var _this2 = this;

            each(this.map, function (list, name) {
                each(list, function (value) {
                    return callback.call(thisArg, value, name, _this2);
                });
            });
        };

        return Headers;
    }();

    function getName(map, name) {
        return Object.keys(map).reduce(function (prev, curr) {
            return toLower(name) === toLower(curr) ? curr : prev;
        }, null);
    }

    function normalizeName(name) {
        if (/[^a-z0-9\-#$%&'*+.^_`|~]/i.test(name)) {
            throw new TypeError('Invalid character in header field name');
        }

        return trim(name);
    }

    /**
     * HTTP Response.
     */

    var Response = /*#__PURE__*/function () {
        function Response(body, _ref) {
            var url = _ref.url,
                headers = _ref.headers,
                status = _ref.status,
                statusText = _ref.statusText;
            this.url = url;
            this.ok = status >= 200 && status < 300;
            this.status = status || 0;
            this.statusText = statusText || '';
            this.headers = new Headers(headers);
            this.body = body;

            if (isString(body)) {
                this.bodyText = body;
            } else if (isBlob(body)) {
                this.bodyBlob = body;

                if (isBlobText(body)) {
                    this.bodyText = blobText(body);
                }
            }
        }

        var _proto = Response.prototype;

        _proto.blob = function blob() {
            return when(this.bodyBlob);
        };

        _proto.text = function text() {
            return when(this.bodyText);
        };

        _proto.json = function json() {
            return when(this.text(), function (text) {
                return JSON.parse(text);
            });
        };

        return Response;
    }();
    Object.defineProperty(Response.prototype, 'data', {
        get: function get() {
            return this.body;
        },
        set: function set(body) {
            this.body = body;
        }
    });

    function blobText(body) {
        return new PromiseObj(function (resolve) {
            var reader = new FileReader();
            reader.readAsText(body);

            reader.onload = function () {
                resolve(reader.result);
            };
        });
    }

    function isBlobText(body) {
        return body.type.indexOf('text') === 0 || body.type.indexOf('json') !== -1;
    }

    /**
     * HTTP Request.
     */

    var Request = /*#__PURE__*/function () {
        function Request(options$$1) {
            this.body = null;
            this.params = {};
            assign(this, options$$1, {
                method: toUpper(options$$1.method || 'GET')
            });

            if (!(this.headers instanceof Headers)) {
                this.headers = new Headers(this.headers);
            }
        }

        var _proto = Request.prototype;

        _proto.getUrl = function getUrl() {
            return Url(this);
        };

        _proto.getBody = function getBody() {
            return this.body;
        };

        _proto.respondWith = function respondWith(body, options$$1) {
            return new Response(body, assign(options$$1 || {}, {
                url: this.getUrl()
            }));
        };

        return Request;
    }();

    /**
     * Service for sending network requests.
     */
    var COMMON_HEADERS = {
        'Accept': 'application/json, text/plain, */*'
    };
    var JSON_CONTENT_TYPE = {
        'Content-Type': 'application/json;charset=utf-8'
    };
    function Http(options$$1) {
        var self = this || {},
            client = Client(self.$vm);
        defaults(options$$1 || {}, self.$options, Http.options);
        Http.interceptors.forEach(function (handler) {
            if (isString(handler)) {
                handler = Http.interceptor[handler];
            }

            if (isFunction(handler)) {
                client.use(handler);
            }
        });
        return client(new Request(options$$1)).then(function (response) {
            return response.ok ? response : PromiseObj.reject(response);
        }, function (response) {
            if (response instanceof Error) {
                error(response);
            }

            return PromiseObj.reject(response);
        });
    }
    Http.options = {};
    Http.headers = {
        put: JSON_CONTENT_TYPE,
        post: JSON_CONTENT_TYPE,
        patch: JSON_CONTENT_TYPE,
        "delete": JSON_CONTENT_TYPE,
        common: COMMON_HEADERS,
        custom: {}
    };
    Http.interceptor = {
        before: before,
        method: method,
        jsonp: jsonp,
        json: json,
        form: form,
        header: header,
        cors: cors
    };
    Http.interceptors = ['before', 'method', 'jsonp', 'json', 'form', 'header', 'cors'];
    ['get', 'delete', 'head', 'jsonp'].forEach(function (method$$1) {
        Http[method$$1] = function (url, options$$1) {
            return this(assign(options$$1 || {}, {
                url: url,
                method: method$$1
            }));
        };
    });
    ['post', 'put', 'patch'].forEach(function (method$$1) {
        Http[method$$1] = function (url, body, options$$1) {
            return this(assign(options$$1 || {}, {
                url: url,
                method: method$$1,
                body: body
            }));
        };
    });

    /**
     * Service for interacting with RESTful services.
     */
    function Resource(url, params, actions, options$$1) {
        var self = this || {},
            resource = {};
        actions = assign({}, Resource.actions, actions);
        each(actions, function (action, name) {
            action = merge({
                url: url,
                params: assign({}, params)
            }, options$$1, action);

            resource[name] = function () {
                return (self.$http || Http)(opts(action, arguments));
            };
        });
        return resource;
    }

    function opts(action, args) {
        var options$$1 = assign({}, action),
            params = {},
            body;

        switch (args.length) {
            case 2:
                params = args[0];
                body = args[1];
                break;

            case 1:
                if (/^(POST|PUT|PATCH)$/i.test(options$$1.method)) {
                    body = args[0];
                } else {
                    params = args[0];
                }

                break;

            case 0:
                break;

            default:
                throw 'Expected up to 2 arguments [params, body], got ' + args.length + ' arguments';
        }

        options$$1.body = body;
        options$$1.params = assign({}, options$$1.params, params);
        return options$$1;
    }

    Resource.actions = {
        get: {
            method: 'GET'
        },
        save: {
            method: 'POST'
        },
        query: {
            method: 'GET'
        },
        update: {
            method: 'PUT'
        },
        remove: {
            method: 'DELETE'
        },
        "delete": {
            method: 'DELETE'
        }
    };

    /**
     * Install plugin.
     */

    function plugin(Vue) {
        if (plugin.installed) {
            return;
        }

        Util(Vue);
        Vue.url = Url;
        Vue.http = Http;
        Vue.resource = Resource;
        Vue.Promise = PromiseObj;
        Object.defineProperties(Vue.prototype, {
            $url: {
                get: function get() {
                    return options(Vue.url, this, this.$options.url);
                }
            },
            $http: {
                get: function get() {
                    return options(Vue.http, this, this.$options.http);
                }
            },
            $resource: {
                get: function get() {
                    return Vue.resource.bind(this);
                }
            },
            $promise: {
                get: function get() {
                    var _this = this;

                    return function (executor) {
                        return new Vue.Promise(executor, _this);
                    };
                }
            }
        });
    }

    if (typeof window !== 'undefined' && window.Vue && !window.Vue.resource) {
        window.Vue.use(plugin);
    }

    return plugin;

})));
